Systron Donner Frequency Counter

This is a systron donner model 114 frequency counter.

Systron donner frequency counter.

Systron donner frequency counter repairs replaced 7441 nixie tube driver chip and replaced blown diodes on input board. Item 6 systron donner model 6054b frequency counter tested working 115 230v 6 systron donner model 6054b frequency counter tested working 115 230v 378 83 182 96 shipping. Worked when it was retired. Jan thu 01 1970 1 00 am posts.

41 91 0 bids 102 60 shipping. Component datecodes are from the late 60s to early 70s. Systron donner 6152 freq counter timer 8 digit nixie display. Systron donner 6241a frequency counter 20hz 100 mhz adjustable sensitivity.

It uses nixie tubes and ttl logic to implement the core functionality. 199 95 29 95 shipping. Good used condition i can t find the plug so can t confirm that it works. Systron donner frequency counter.

Frequency counters email to friends share on facebook opens in a new window or tab share on twitter opens in a new window or tab share on pinterest opens in a new window or tab add to watchlist. Systron donner frequency counter 6202b. If the input is 50 ohms sometimes you can get away with changing this resistor to 100k or. Heathkit frequency counter im 4120.

Albuquerque nm 87123 hi grampibear br there is one thing you might try that is not guaranteed to work. After a preset period known as the gate time 1 second for example the value in the counter is. Find great deals on ebay for systron donner counter. 60 00 shipping.

Most frequency counters work by using a counter which accumulates the number of events occurring within a specific period of time. Basic comparison checks with similar test equipment confirms unit is still.